WASHINGTON (AP) - President Barack Obama is headed to rival Mitt Romney's backyard, holding campaign events in New Hampshire and Romney's home state of Massachusetts on the start of what is expected to be a notable week for the 2012 campaign.

Obama was speaking at a campaign rally in Durham, N.H., and then holding fundraisers in Boston, kicking off a 2-day fundraising trip that will take him to Atlanta and Miami on Tuesday.

The trip kicks off a week in which the Supreme Court is expected to rule on Obama's health care overhaul law, the most significant piece of legislation during Obama's presidency.

Romney served as Massachusetts governor from 2003 to 2007. He formally announced his candidacy in New Hampshire and has a vacation home on New Hampshire's Lake Winnipesaukee.